JP5437896B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device in which a wide variety of light guide plates are arranged in three dimensions.

  Conventionally, with respect to lighting fixtures using light emitting diodes, a plurality of radiating fins project from the outer surface of the container, and the light emitting diodes are disposed close to the inner surface of the container, thereby reducing the manufacturing cost of the light emitting diode. There is a configuration of a lighting device with improved heat dissipation (see, for example, Patent Document 1).

  Further, regarding a bulb-type LED lamp using a light-emitting diode as a light source, the other surface side of the LED substrate on which the LED chip is mounted on the metal substrate via the insulating adhesive layer is directly or indirectly brought into contact with the light source mounting portion of the holder. Thus, there is a configuration of a bulb-type LED lamp that maintains heat dissipation even when a high-power LED substrate is used (see, for example, Patent Document 2).

JP 2006-040727 A JP 2009-037995 A

  However, in the configuration as described above, since a plurality of light sources are provided on a plane, a large number of light sources are required to suppress light contrast, and light emitted from the plane has light distribution characteristics. There is a problem that it is difficult to optimize the optical characteristics due to the bias.

  Therefore, in view of the above technical problems, the present invention suppresses the brightness and darkness of the light emitted from the device and derives optical characteristics by deriving light from the holding portion holding the three-dimensional light emitting portion. It aims at providing the illuminating device which can optimize.

In order to solve the above-described problems, the illumination device according to the present invention is a light guide plate provided in a three-dimensional manner with a light guide plate that guides light incident from the incident surface as diffused light from a concave or convex pattern formed on the main surface. A housing part provided with a light part, a light source part adjacent to the light guide part, for introducing light into the light guide plate from the incident surface, and a power supply part for supplying a predetermined driving power to the light source part; And a holding unit including a lens that holds the light guide plate of the light guide unit and is positioned between the adjacent light guide plates and receives light from the light source unit.

  According to the illumination device of the present invention, light can be led out from the holding portion holding the three-dimensional light emitting portion, so that the brightness and darkness of the light emitted from the device can be suppressed and the optical of the device can be suppressed. The characteristics can be optimized.

It is a perspective view which shows the illuminating device which concerns on the 1st Embodiment of this invention. It is a perspective view which decomposes | disassembles and shows the illuminating device which concerns on the 1st Embodiment of this invention for every structure. It is principal part sectional drawing which shows the illuminating device which concerns on the 1st Embodiment of this invention. It is a figure which shows the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention, and the light source part and holding | maintenance part of a housing | casing part, (a) is the light source part of a light guide part and a housing | casing part, and a holding | maintenance part. FIG. 4B is a bottom view illustrating the light guide unit, the light source unit of the housing unit, and the holding unit. It is a perspective view which shows the housing | casing part and holding | maintenance part of the illuminating device which concern on the 1st Embodiment of this invention, (a) is the state engaged after inserting a holding member in a housing | casing using a fixing member. FIG. 4B is a perspective view illustrating a state in which the holding member is directly screwed into the housing and engaged. It is a perspective view which shows the housing | casing part of the illuminating device which concerns on the 1st Embodiment of this invention, (a) is a perspective view which shows the housing | casing provided with the socket, (b) shows the housing | casing provided with the nozzle | cap | die. It is a perspective view. It is a schematic diagram which shows the light source provided in the light guide part arrange | positioned in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention, and the front-end | tip branched into plurality, and the light source provided adjacent to this light guide plate, (a) Is a schematic view showing the light guide plate and the light source from the main surface of the light guide plate, and (b) is a cross-sectional view showing the central branching portion of the light guide plate and the light source which are formed on the same main surface facing the concave pattern. It is a schematic diagram. It is a schematic diagram which shows the light source provided in the light guide part arrange | positioned in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention, and the front-end | tip branched into plurality, and the light source provided adjacent to this light guide plate, (a) Is a schematic diagram showing the light guide plate and the light source from the main surface of the light guide plate, (b) is a cross-sectional view of the central branching portion of the light guide plate and the light source formed in a non-facing manner on the main surface facing the concave pattern It is a schematic diagram shown. It is a schematic diagram which shows the light source provided in the light guide part arrange | positioned in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention, and the front-end | tip branched into plurality, and the light source provided adjacent to this light guide plate, (a) Is a schematic view showing the light guide plate and the light source from the main surface of the light guide plate, (b) is a central branch portion of the light guide plate formed so that the concave pattern becomes deeper stepwise from the incident surface toward the tip. It is a schematic diagram which shows a light source with sectional drawing. It is a schematic diagram which shows the light-guide plate currently formed so that the length of the part branched in multiple among the light-guide plates provided in the light guide part of the illuminating device concerning the 1st Embodiment of this invention may differ. (A) is a schematic diagram showing the main surface of the light guide plate, (b) is a schematic diagram showing the tip of the light guide plate. The schematic which shows the light-guide plate currently formed so that the length of the part branched especially in multiple in the light-guide plate provided in the light guide part of the illuminating device concerning the 1st Embodiment of this invention may become the same. It is a figure, (a) is a schematic diagram which shows the main surface of a light-guide plate, (b) is a schematic diagram which shows the front-end | tip of a light-guide plate. The schematic which shows the light-guide plate in which the curved surface is formed toward the outer side of the front-end | tip of the part branched in particular among the light-guide plates provided in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention. It is a figure, (a) is a schematic diagram which shows the main surface of a light-guide plate, (b) is a schematic diagram which shows the front-end | tip of a light-guide plate. The schematic which shows the light-guide plate in which the curved surface is formed toward the inner side of the front-end | tip of the part branched in particular among the light-guide plates provided in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention. It is a figure, (a) is a schematic diagram which shows the main surface of a light-guide plate, (b) is a schematic diagram which shows the front-end | tip of a light-guide plate. The light-guide plate in which the inclined surface is formed toward the inner side of the front-end | tip of the part branched especially among the light-guide plates provided in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention is shown. It is a schematic diagram, (a) is a schematic diagram which shows the main surface of a light-guide plate, (b) is a schematic diagram which shows the front-end | tip of a light-guide plate. In the light guide plate provided in the light guide portion of the lighting device according to the first embodiment of the present invention, a concave portion made of a columnar shape with a predetermined depth is formed at the tip of a portion branched into a plurality of portions. It is a schematic diagram which shows the light guide plate which is shown, (a) is a schematic diagram which shows the main surface of a light guide plate, (b) is a schematic diagram which shows the front-end | tip of a light guide plate. In the light guide plate provided in the light guide portion of the lighting device according to the first embodiment of the present invention, a concave portion having a conical shape with a predetermined depth is formed at the tip of a portion branched into a plurality of portions. It is a schematic diagram which shows the light guide plate which is shown, (a) is a schematic diagram which shows the main surface of a light guide plate, (b) is a schematic diagram which shows the front-end | tip of a light guide plate. The schematic diagram which shows the light-guide plate in which the front-end | tip of the part branched in particular among the light-guide plates provided in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention is formed in trapezoid trapezoid shape, respectively. (A) is a schematic diagram which shows the main surface of a light-guide plate, (b) is a schematic diagram which shows the front-end | tip of a light-guide plate. The schematic diagram which shows the light-guide plate in which the front-end | tip of the part branched especially in multiple among the light-guide plates provided in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention is formed in the truncated cone shape, respectively. (A) is a schematic diagram which shows the main surface of a light-guide plate, (b) is a schematic diagram which shows the front-end | tip of a light-guide plate. The perspective view which shows the light guide part and the holding | maintenance part which combined and provided the some light guide plate formed so that the length of the part branched into the some of the illuminating device concerning the 1st Embodiment of this invention may become the same. It is. A light guide unit and a holding unit provided by combining a plurality of light guide plates formed so that each of the four branched portions of the lighting device according to the first embodiment of the present invention has a trapezoidal shape. It is a perspective view shown. The light guide part and holding part which combined and provided the some light guide plate formed so that four front-end | tips provided in the cross shape of the illuminating device concerning the 1st Embodiment of this invention may become circular arc shape are shown. It is a perspective view. It is a perspective view which shows the light guide part and holding part which combined and provided the some light guide plate so that four side surfaces provided in the cross shape of the illuminating device concerning the 1st Embodiment of this invention may become polygonal shape, respectively. is there. The perspective view which shows the light guide part and holding part which combined and provided the some light guide plate so that four side surfaces provided in the cross shape of the illuminating device concerning the 1st Embodiment of this invention may become a streamline shape, respectively. It is. It is a schematic diagram which shows the cross section of the light-guide plate provided in the light guide part of the illuminating device which concerns on the 1st Embodiment of this invention, and is corresponded to an application example, (a) of the light-guide plate which adjoins the edge part of a light-guide plate. The schematic diagram which shows the cross section of the several light-guide plate combined with the triangular prism shape which provided the space inside by connecting to an edge part, (b) is the cross section of the light guide plate integrally molded by the triangular prism shape which provided the space inside (C) is a schematic diagram showing a cross section of a plurality of curved light guide plates combined in a cylindrical shape by connecting the ends of curved light guide plates to the ends of adjacent curved light guide plates, d) is a schematic diagram showing a cross section of a light guide plate integrally formed in a cylindrical shape, (e) is a schematic diagram showing a cross section of a plurality of light guide plates in which light guide plates are combined in a cross shape, and (f) is integrated in a cross shape. It is a schematic diagram which shows the cross section of the shape | molded light-guide plate. It is a perspective view which shows the illuminating device which concerns on the 2nd Embodiment of this invention, (a) is a perspective view shown in the state which does not permeate | transmit each structure of an illuminating device, (b) permeate | transmits some structures of an illuminating device. It is a perspective view shown in the made state. It is a perspective view which decomposes | disassembles and shows the illuminating device which concerns on the 2nd Embodiment of this invention for every structure. It is principal part sectional drawing which shows the illuminating device which concerns on the 2nd Embodiment of this invention. The light guide unit provided with a combination of a plurality of light guide plates formed so that the tip of each of the four branched portions of the lighting device according to the second embodiment of the present invention has a trapezoidal shape is held and held It is a perspective view which shows a part. The light guide part and holding part which combined and provided the some light guide plate formed so that four front-end | tips provided in the cross shape of the illuminating device concerning the 2nd Embodiment of this invention may become circular arc shape are shown. It is a perspective view. It is a perspective view which shows the illuminating device which concerns on the 3rd Embodiment of this invention, (a) is a perspective view shown in the state which does not permeate | transmit each structure of an illuminating device, (b) is transparent for a part of structure of the illuminating device. It is a perspective view shown in the made state. It is a perspective view which shows the light guide part and holding | maintenance part which provided the joining member of the illuminating device which concerns on the 3rd Embodiment of this invention, (a) mounts | wears a holding part with the several light guide plate which comprises a light guide part. The perspective view which shows the state which carried out, (b) is a perspective view which shows the some light-guide plate with which a holding | maintenance part is mounted | worn. It is a perspective view which shows the holding | maintenance part which provided the light guide part and joining member of the illuminating device which concerns on the 3rd Embodiment of this invention, (a) mounts | wears a holding part with the several light-guide plate which comprises a light guide part. The perspective view which shows the state which carried out, (b) is a perspective view which shows the some light-guide plate with which a holding | maintenance part is mounted | worn. It is a bottom view corresponding to FIG.31 and FIG.32 which shows the light guide part of the illuminating device which concerns on the 3rd Embodiment of this invention, and the light source part of a housing | casing part. It is a perspective view which shows the illuminating device which concerns on the 4th Embodiment of this invention. It is a perspective view which shows the illuminating device which concerns on the 5th Embodiment of this invention. It is a figure which shows the light guide part of the illuminating device which concerns on the 5th Embodiment of this invention, and the holding | maintenance part which provided one lens between the light guide plates adjacent to a housing | casing part, (a) is a light guide part. The perspective view which shows a housing | casing part and a holding | maintenance part, (b) is a bottom view which shows a light guide part, a housing | casing part, and a holding | maintenance part. It is a figure which shows the holding | maintenance part which provided the lens between the light-guide part of the illuminating device which concerns on the 5th Embodiment of this invention, and the housing | casing part, and a plurality of lenses, (a) is a light-guide part and a housing | casing. The perspective view which shows a body part and a holding | maintenance part, (b) is a bottom view which shows a light guide part, a housing | casing part, and a holding | maintenance part. It is a perspective view which shows the illuminating device which concerns on the 6th Embodiment of this invention, (a) is a perspective view shown in the state which does not permeate | transmit the structure of an illuminating device, (b) permeate | transmits a part of structure of the illuminating device. It is a perspective view shown in the made state. It is a perspective view which shows the illuminating device which concerns on the 7th Embodiment of this invention, (a) is a perspective view shown in the state which does not permeate | transmit each structure of an illuminating device, (b) is transparent for some structures of an illuminating device. It is a perspective view shown in the made state. It is a perspective view which shows the illuminating device which concerns on the 8th Embodiment of this invention, (a) is a perspective view shown in the state which does not permeate | transmit each structure of an illuminating device, (b) is transparent for a part of structure of the illuminating device. It is a perspective view shown in the made state. It is a perspective view which shows the illuminating device which concerns on the 9th Embodiment of this invention, (a) is a perspective view shown in the state which does not permeate | transmit each structure of an illuminating device, (b) is transparent for some structures of an illuminating device. It is a perspective view shown in the made state. It is a perspective view which shows the light guide part which provided the joining member of the illuminating device which concerns on the 9th Embodiment of this invention, the lens part which provided the joining member, and a holding | maintenance part, (a) comprises a light guide part. The perspective view which shows the state which each mounted | wore the holding | maintenance part with the some lens plate which comprises a some light guide plate and a lens part, (b) is a perspective view which shows the some light guide plate and lens board with which a holding | maintenance part is mounted | worn. It is a perspective view which shows the light guide part of the illuminating device which concerns on the 9th Embodiment of this invention, the lens part, and the holding part which provided the joining member, (a) is the several light guide plate which comprises a light guide part, and The perspective view which shows the state which each mounted | wore the holding | maintenance part with the some lens plate which comprises a lens part, (b) is a perspective view which shows the some light-guide plate and lens plate with which a holding | maintenance part is mounted | worn. It is a bottom view corresponding to FIG.42 and FIG.43 which shows the light guide part of the illuminating device which concerns on the 9th Embodiment of this invention, a lens part, and the light source part of a housing | casing part.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments according to a lighting device of the invention will be described with reference to the drawings. In addition, the illuminating device of this invention is not limited to the following description, In the range which does not deviate from the summary of this invention, it can change suitably.

  Moreover, in the following description, the illuminating device 1 of the 1st Embodiment of this invention is demonstrated first, referring FIG. 1 thru | or FIG. Next, the illuminating device 2 of the 2nd Embodiment of this invention is demonstrated, referring FIG. 25 thru | or FIG. Next, a lighting device 3 according to a third embodiment of the present invention will be described with reference to FIGS. 30 to 33. Next, the illuminating device 4 of the 4th Embodiment of this invention is demonstrated, referring FIG. Next, the illuminating device 5 of the 5th Embodiment of this invention is demonstrated, referring FIG. 35 thru | or FIG. Next, the illuminating device 6 of the 6th Embodiment of this invention is demonstrated, referring FIG. Next, the illuminating device 7 of the 7th Embodiment of this invention is demonstrated, referring FIG. Next, the illuminating device 8 of the 8th Embodiment of this invention is demonstrated, referring FIG. Next, the illuminating device 9 of the 9th Embodiment of this invention is demonstrated, referring FIG. 41 thru | or FIG. Finally, a method for manufacturing a light guide plate disposed in each of the illumination devices according to the first to ninth embodiments of the present invention will be described.

[First Embodiment]
Hereinafter, the illumination device 1 according to the first embodiment of the present invention will be specifically described with reference to FIGS. 1 to 24.

  For example, as illustrated in FIG. 1, the illumination device 1 according to the first embodiment includes a light guide unit 100, a housing unit 200, and a holding unit 300. Hereinafter, each structure of the illuminating device 1 is demonstrated in order.

  The light guide unit 100 constituting the illumination device 1 of the first embodiment is provided with a combination of light guide plates that derive light incident from the incident surface as diffused light from a concave or convex pattern formed on the main surface. Yes. With regard to such a light guide unit 100, first, the basic specifications of the light guide plate provided in the light guide unit 100 will be described with reference to FIG. Next, basic optical characteristics of the light guide plate provided in the light guide unit 100 will be described with reference to FIGS. Further, the shape of a portion branched into a plurality of light guide plates provided in the light guide unit 100 will be described with reference to FIGS. 10 to 18. Further, the outer shape of the light guide unit 100 will be described with reference to FIGS. Furthermore, an application example of a light guide plate provided in the light guide unit 100 will be described with reference to FIG.

  First, basic specifications of the light guide plate provided in the light guide unit 100 will be described with reference to FIG. The light guide unit 100 is configured, for example, by combining the light guide plate 11 and the light guide plate 12 in a cross shape. The light guide plate 11 and the light guide plate 12 are each made of, for example, an acrylic resin plate. The light guide plate 11 and the light guide plate 12 are not limited to colorless resin plates, and colored resin plates may be used. The light guide plate 11 and the light guide plate 12 may be, for example, a resin plate to which a particulate diffusion member that emits diffused light when irradiated with visible light is added. Similarly, for the light guide plate 11 and the light guide plate 12, for example, a resin plate to which a fluorescent agent that emits fluorescence when irradiated with light in the ultraviolet region or visible region is applied or added may be used. The light guide plate 11 and the light guide plate 12 are formed in a predetermined shape. Specifically, in the light guide plate 11, the tip of the light guide plate 11 is branched into four parts: a branch part 11A, a branch part 11B, a branch part 11C, and a branch part 11D. The light guide plate 11 is formed such that the lengths of the leading ends 11G of the branching portions 11B and 11C are longer than the lengths of the leading ends 11G ′ of the branching portions 11A and 11D. Further, the light guide plate 11 has a depth of a notch portion 11L formed between the branch portion 11A and the branch portion 11B and a notch portion 11N formed between the branch portion 11C and the branch portion 11D. It is formed to be equal. The light guide plate 11 is formed so that the depth of the notch 11M is deeper than the depth of the notch 11L and the notch 11N formed adjacent to the left and right.

  In addition, regarding the basic specifications of the light guide plate provided in the light guide unit 100, the light guide plate 12 inserted and combined in the light guide plate 11 is similar to the light guide plate 11 in that the front end of the light guide plate 12 has a branching portion 12A. , Branching portion 12B, branching portion 12C, and branching portion 12D. Similarly to the light guide plate 11, the light guide plate 12 is formed such that the lengths of the leading ends 12G of the branching portions 12B and 12C are longer than the lengths of the leading ends 12G ′ of the branching portions 12A and 12D. Has been. Furthermore, the light guide plate 12 is similar to the light guide plate 11 in that a notch portion 12L formed between the branch portion 12A and the branch portion 12B and a notch portion 12N formed between the branch portion 12C and the branch portion 12D. Are formed to be substantially equal in depth. Similarly to the light guide plate 11, the light guide plate 12 is formed such that the depth of the notch 12M is shallower than the depth of the notch 12L and the notch 12N formed adjacent to the left and right. .

  Similarly, regarding the basic specifications of the light guide plate provided in the light guide unit 100, the notch portion 11M of the light guide plate 11 and the joint portion 12J provided in the center of the incident surface 12F of the light guide plate 12 are joined. A light guide plate 12 is inserted into the light guide plate 11. The light guide plate 11 and the light guide plate 12 are formed so that the incident surface 11F of the light guide plate 11 and the incident surface 12F of the light guide plate 12 are located on the same plane when the notch portion 11M and the joint portion 12J are joined. ing. Further, the light guide plate 11 and the light guide plate 12 are respectively formed with a concave pattern for deriving diffused light, a convex pattern, or a pattern 11P and a pattern 12P made of concave and convex patterns in a matrix. . The interval between the pattern 11P and the pattern 12P is, for example, 1 mm to 6 mm. The light guide plate 11 and the light guide plate 12 are respectively applied with a silicone coating agent or glass coating agent (not shown) having functions such as waterproof, antifouling, and dustproof, or functions such as waterproof, antifouling, and dustproof. You may coat | cover the transparent resin which has not shown in figure.

  Next, basic optical characteristics of the light guide plate provided in the light guide unit 100 will be described with reference to FIGS. In FIGS. 7A to 9A, illustration of the pattern on the main surface of the light guide plate is omitted. Here, in FIG. 7, the light guide plate 13 in which the configurations of the light guide plate 11 and the light guide plate 12 are simplified, and the light source 21 adjacent to the light guide plate 13 are schematically shown in a cross-sectional view. A part of the light of the light source 21 incident from the incident surface 13F of the light guide plate 13 is caused by, for example, three notches 13L to 13N formed between the branch portions 13A to 13D branched into four. , Each can be reflected at a wide angle. Here, part of the light reflected at the wide angle by the notch 13L to the notch 13N is subjected to multiple reflection between the one main surface 13V and the other main surface 13Q respectively provided at the branching portion 13A to the branching portion 13D. The diffused light can be efficiently generated by the patterns 13W formed in plural on one main surface 13V and the patterns 13R formed in plural on the other main surface 13Q. Furthermore, when the depth of the cutout portion 13M of the light guide plate 13 is formed so as to be deeper than the depth of the cutout portion 13L and the cutout portion 13N formed adjacent to the left and right, the light reflected at a wide angle by the cutout portion 13M is reflected. It is easy to reach the branch part 13A and the branch part 13D.

  Further, regarding the basic optical characteristics of the light guide plate provided in the light guide unit 100, a part of the light of the light source 21 incident from the incident surface 13F of the light guide plate 13 does not pass through the notch part 13L to the notch part 13N. The diffused light is generated by the pattern 13W and the pattern 13R respectively provided in the branch part 13A to the branch part 13D. Here, in the case of a light guide plate that is formed in a simple rectangular shape like a conventional light guide plate, most of the light that goes straight from the incident surface of the light guide plate goes straight without being converted into diffused light. Released from the tip. However, like the light guide plate 13 according to the present invention, for example, when it has a shape branched into four, the light incident from the incident surface 13F of the light guide plate 13 passes through the notch 13L to the notch 13N. Multiple reflection is performed between one main surface 13V and the other main surface 13Q provided in each of the branch portions 13A to 13D. Also, the light incident on the light guide plate 13 is reflected in all directions between the surfaces of the light guide plate 13 so that, for example, the light is incident on the tip 13G at an oblique incidence, and then is not emitted from the tip 13G. Reflected on the 13F side. Therefore, in the light guide plate 13 according to the present invention, the ratio of the light incident from the incident surface 13F of the light guide plate 13 going straight without being converted into diffused light and emitted from the tip 13G can be greatly reduced. it can.

  Similarly, regarding the basic optical characteristics of the light guide plate provided in the light guide unit 100, if the density of the pattern 13W and the pattern 13R formed on the light guide plate 13 is sufficiently high, a plurality of patterns generated in the pattern 13W and the pattern 13R are generated. Diffused light is derived from one main surface 13V and the other main surface 13Q of the light guide plate 13 as a substantially uniform surface light source. Further, a part of the diffused light generated in the pattern 13W on the one main surface 13V and a large part of the diffused light generated in the pattern 13R on the other main surface 13Q are visually recognized by the viewer's eyes E. For this reason, the light guide plate 13 shown in FIG. 8B is formed more than the light guide plate 13 in which a plurality of patterns 13W formed on one main surface 13V and a plurality of patterns 13R formed on the other main surface 13Q shown in FIG. The light guide plate 18 in which a plurality of patterns 18W formed on one main surface 18V and a plurality of patterns 18R formed on the other main surface 18Q shown in FIG. Since the number of patterns in which the diffused light is generated increases, the difference in light brightness in the light guide plate 18 is reduced. Further, since the light intensity of the light source 21 is relatively lowered from the incident surface of the light guide plate to the tip, the depth of the pattern is changed from the incident surface 19F of the light guide plate 19 to the tip as shown in FIG. It is possible to increase the intensity of the diffused light generated by forming deeply in steps toward 19G, and to average the intensity of the diffused light generated in a plurality of patterns. Similarly, the intensity of the diffused light may be averaged by forming the pattern pitch so as to become denser in steps from the incident surface 19F of the light guide plate 19 toward the tip 19G.

  Furthermore, the shape of a portion branched into a plurality of light guide plates provided in the light guide unit 100 will be described with reference to FIGS. 10 to 18. 10 to 18, the illustration of the concave or convex pattern is omitted. The light guide plate 14A shown in FIG. 10 is formed so that the lengths of the branched portions are different, and corresponds to the light guide plate 11 and the light guide plate 12 shown in FIG. Further, the light guide plate 14B shown in FIG. 11 is formed so that the lengths of the branched portions are the same, and corresponds to a simplified light guide plate 14A shown in FIG. Further, the light guide plate 14C shown in FIG. 12 has a curved surface formed toward the outside of the tip of the branched portion, and the light guide plate 14D shown in FIG. 13 has a curved surface formed inside the tip. The light guide plate 14E shown in FIG. 1 has an inclined surface toward the inside of the tip. Moreover, about the light-guide plate 14E shown in FIG. 14, you may form an inclined surface toward the outer side of the said front-end | tip. Such a light guide plate 14C to light guide plate 14E is excellent in design by being processed into a special shape at the tip portion, and can suppress a difference in light intensity distribution depending on a viewing angle. In addition, the light guide plates 14C to 14E are likely to be multiple-reflected on each main surface because the light is irregularly reflected at the tip portion. Therefore, the ratio of light emitted to the outside from the tip portions of the light guide plates 14C to 14E decreases, and the ratio of light converted into diffused light by a concave or convex pattern (not shown) increases. The light extraction efficiency can be improved. The light emitted to the outside from the tip portions of the light guide plates 14C to 14E is led out obliquely outward, inward, and inward with respect to the lighting device 1, respectively.

  Further, regarding the shape of the branched portion of the light guide plate provided in the light guide section 100, the light guide plate 14F shown in FIG. 15 is a concave portion having a cylindrical shape with a predetermined depth at the tip of the branched portion. The light guide plate 14G shown in FIG. 16 is formed with a conical recess having a predetermined depth at the tip. Such light guide plate 14F and light guide plate 14G have excellent design characteristics and light intensity depending on the viewing angle, because the tip portion is processed into a special shape, similar to light guide plates 14C to 14E. The difference in distribution can be suppressed. Further, when the light guide plate 14F and the light guide plate 14G are formed with a cylindrical or conical recess at the tip of a plurality of branched portions of the light guide plate using, for example, a drilling machine, the surface accuracy of the recess is roughened. By doing so, light can be diffusely reflected on the inner peripheral surface of the recess. Therefore, the light extraction efficiency in the light guide plate 14F and the light guide plate 14G can be improved.

  Similarly, regarding the shape of the light guide plate branched into a plurality of light guide plates provided in the light guide unit 100, the light guide plate 14H shown in FIG. The light guide plate 14I shown in FIG. Such light guide plate 14H and light guide plate 14I are excellent in design and have a light intensity depending on the viewing angle, because the tip portion is processed into a special shape, similar to light guide plates 14C to 14G. The difference in distribution can be suppressed. Further, the light guide plate 14H and the light guide plate 14I are subjected to end milling using, for example, a milling machine, so that a convex portion having a trapezoidal trapezoidal shape or a truncated cone shape is formed at the tip of the branched portion of the lightguide plate. Has been. In this manner, by forming a convex portion having a trapezoidal trapezoidal shape or a truncated cone shape at the tip portions of the light guide plate 14H and the light guide plate 14I, the orthogonal corner portions are removed, and light is multiplexed inside the light guide plate. It becomes easy to reflect. Therefore, the light extraction efficiency in the light guide plate 14H and the light guide plate 14I can be improved. In addition, since the tip portions of the light guide plate 14H and the light guide plate 14I are formed in a substantially lens shape having a trapezoidal trapezoidal shape or a truncated cone shape, light emitted to the outside from the tip portion becomes substantially parallel light.

  Similarly, regarding the shape of the light guide plate branched into a plurality of light guide plates provided in the light guide unit 100, the light guide plates provided in the light guide unit 100 described above with reference to FIGS. You may form so that it may twist from the tip. Moreover, about the part branched into the plurality of light-guide plates, a cross section is not limited to a rectangular thing, For example, you may form so that a cross section may become circular shape, an ellipse shape, or a polygonal column shape. Similarly, the plurality of branched portions of the light guide plate may be formed in a conical shape whose cross-sectional area decreases from the incident surface of the light guide plate toward the tip. Further, by roughening the surface accuracy of a part or all of the side surface and the tip of the light guide plate, the light irradiated to the side surface and the tip from the inside of the light guide plate may be diffusely reflected at the side surface and the tip. . Further, the shape of the branched portion of the light guide plate provided in the light guide unit 100 described above with reference to FIGS. 10 to 18 can be applied to the illumination devices of other embodiments.

  Furthermore, the outer shape of the light guide unit 100 will be described with reference to FIGS. 19 to 23. The light guide unit 110 shown in FIG. 19 is provided with a combination of a light guide plate 111 and a light guide plate 112 formed so that the lengths of the branched portions are the same, and the length of the branched portion is divided. Basic specifications other than the above are the same as those of the light guide unit 100 described above. Further, the light guide unit 120 illustrated in FIG. 20 corresponds to an application example of the light guide unit 100. Such a light guide unit 120 is provided with a combination of a light guide plate 121 and a light guide plate 122 formed so that each of the four branches in a cross shape has a trapezoidal shape. Here, in the light guide plate 121, the tip 121G of the light guide plate 121 is branched into two parts, a branch part 121A and a branch part 121B. Furthermore, the light guide plate 121 has a trapezoidal shape by being inclined with respect to the holding unit 300 so that the leading ends 121G of the branching part 121A and the branching part 121B are lowered from the periphery of the lighting device 1 toward the center. Is formed. Further, the light guide plate 122 inserted and combined in the light guide plate 121 has the same shape as the light guide plate 121.

  Similarly, regarding the outer shape of the light guide unit 100, the light guide unit 130 illustrated in FIG. 21 corresponds to an application example of the light guide unit 100. Such a light guide unit 130 is provided with a combination of a light guide plate 131 and a light guide plate 132 formed so that four tips provided in a cross shape are arcuate. Here, in the light guide plate 131, the tip 131G of the light guide plate 131 is branched into two parts, a branch part 131A and a branch part 131B. Furthermore, the light guide plate 131 is circular with each of the branch portions 131A and the distal ends 131G of the branch portions 131B being curved with respect to the holding portion 300 so that the tips 131G increase from the periphery of the lighting device 1 toward the center. It is formed in an arc shape. In addition, the light guide plate 132 that is inserted into and combined with the light guide plate 131 is formed in a semicircular shape because the tip 132G is curved from the periphery of the lighting device 1 toward the center.

  Similarly, regarding the outer shape of the light guide unit 100, the light guide unit 140 illustrated in FIG. 22 corresponds to an application example of the light guide unit 100. Such a light guide unit 140 is provided by combining the light guide plate 141 and the light guide plate 142 such that the four side surfaces provided in a cross shape are polygonal. Here, in the light guide plate 141, the tip 141G of the light guide plate 141 is branched into two parts, a branch part 141A and a branch part 141B. Furthermore, the light guide plate 141 is formed in a polygonal shape with the side surfaces 141U of the branching portion 141A having five sides that are continuous at different angles. In addition, the branch part 141B of the light guide plate 141 is formed to be the same as the branch part 141A. Further, the light guide plate 142 inserted and combined in the light guide plate 141 is also formed in a polygonal shape by each of the opposing side surfaces 142U comprising five surfaces that are continuous at different angles.

  Similarly, regarding the outer shape of the light guide unit 100, the light guide unit 150 illustrated in FIG. 23 corresponds to an application example of the light guide unit 100. Such a light guide unit 150 is provided by combining the light guide plate 151 and the light guide plate 152 so that the four side surfaces provided in a cross shape have a streamline shape. Here, in the light guide plate 151, the tip 151G of the light guide plate 151 is branched into two parts, a branch part 151A and a branch part 151B. Furthermore, the light guide plate 151 is formed in a streamline shape by processing the side surface 151U of the branch portion 151A into a curved shape. In addition, the branch part 151B of the light guide plate 151 is formed so as to be the same as the branch part 151A. In addition, the light guide plate 152 that is inserted into and combined with the light guide plate 151 is also formed into a streamline shape by processing each of the two side surfaces 152U that are provided facing each other into a curved shape. In addition, about the light guide part 100 thru | or the light guide part 130, the position of 1 cm away from the front-end | tip of each light guide part in the perpendicular direction, and the position which is 30 cm, 50 cm, and 100 cm away in the horizontal direction from this 1 m away position. Table 1 shows an example of the measurement result of the illuminance [lx] at the location. The light source conditions are the same in each light guide. Further, the outer shape of the light guide unit 100 described above with reference to FIGS. 19 to 23 can be applied to the illumination devices of other embodiments.

  Furthermore, an application example of a light guide plate provided in the light guide unit 100 will be described with reference to FIG. In addition, in each figure of FIG. 24, illustration of a concave or convex pattern is abbreviate | omitted. FIG. 24A shows three light guide plates 15 combined in a triangular prism shape having a space inside by connecting the end portions of the light guide plate 15 to the end portions of the adjacent light guide plates 15. Similarly, FIG. 24B shows a light guide plate 15 ′ integrally formed by, for example, molding so as to have a triangular prism shape having a space inside. Note that the light guide plate is not limited to a triangular prism shape having a space inside, as shown in FIGS. 24A and 24B, for example, a quadrangular prism or a pentagonal column having a space inside. It is good also as a polygonal column consisting of etc. FIG. 24C shows three curved light guide plates 16 combined in a cylindrical shape by connecting the end portions of the curved light guide plates 16 to the end portions of the adjacent curved light guide plates 16. . Similarly, FIG. 24D shows a light guide plate 16 ′ integrally formed by, for example, molding so as to have a cylindrical shape. As shown in FIGS. 24C and 24D, the light guide plate is not limited to a cylindrical shape having a circular cross section, and may be, for example, a cylindrical shape having an elliptical cross section. .

  Further, regarding an application example of the light guide plate provided in the light guide unit 100, FIG. 24 (e) shows four light guide plates 17 provided in a cross shape by combining the light guide plates 17. FIG. Similarly, FIG. 24F shows a light guide plate 17 ′ integrally formed by, for example, molding so as to have a cross shape. Note that, as shown in FIGS. 24E and 24F, the light guide plate is not limited to the cross-shaped shape in which the four branch portions protrude from the center, for example, three from the center. Or it is good also as what protruded several branch parts, such as five. Although not shown in each drawing of FIG. 24, the light guide plate is integrally formed by a molding process so that, for example, a space is not provided therein, and the cross section becomes a polygonal shape, a circular shape, an elliptical shape, or the like. Also good. Further, for the light guide plate shown in FIG. 24B, FIG. 24D, and FIG. 24F, the outer shape of the light guide plate and the outer shape of the light guide plate are formed by, for example, molding using an injection molding machine and a mold. It is not limited to the method of integrally forming a concave or convex pattern provided on the surface. Specifically, for example, after forming only the outer shape of the light guide plate by molding, for example, a concave pattern may be formed on the surface of the light guide plate by ultrasonic processing. Similarly, after forming only the outer shape of the light guide plate by molding, for example, a convex pattern may be formed on the surface of the light guide plate by silk printing, for example. Moreover, about the application example of the light-guide plate provided in the light guide part 100 mentioned above with reference to FIG. 24, it is applicable also to the illuminating device of other embodiment.

  The housing | casing part 200 which comprises the illuminating device 1 of 1st Embodiment adjoins the light guide part 100, as shown in FIG. 2, for example, and has provided the light source part and the power supply part. Here, the light source unit introduces light into the light guide plate 11 and the light guide plate 12 from the incident surface 11F and the incident surface 12F of the light guide plate 11 and the light guide plate 12 toward the opposite tip 11G and tip 12G. Such a light source unit includes a light source 21 and a substrate 22. Hereinafter, the configuration of the light source unit will be described. As the light source 21 of the light source unit, for example, a light emitting diode (LED) that emits white light is used. More specifically, the LED has a daylight color of about 3000 Kelvin or a cold white color of about 6000 Kelvin. Here, as shown in FIG. 2 and FIG. 4, as an example, 10 surface-mounted LEDs are arranged along the incident surface 11F and the incident surface 12F of the light guide plate 11 and the light guide plate 12 combined in a cross shape. They are arranged in a cross shape. The light source 21 is not limited to a white LED. For example, the light source 21 is an LED formed of any one of white, red, orange, yellow, green, blue, indigo, and purple or a combination of these colors. It may be configured. You may comprise by LED which emits the light of an ultraviolet region. Similarly, the light source 21 is not limited to an LED, and may be composed of, for example, an organic light emitting diode, a fluorescent tube, a cold cathode tube, or a neon tube.

  In addition, with respect to the housing unit 200, the substrate 22 of the light source unit is a member for mounting the light source 21. Such a board | substrate 22 consists of aluminum which is lightweight and has fixed intensity | strength, for example, and is formed in the disk shape. The material of the substrate 22 may be copper excellent in heat dissipation or a glass epoxy substrate excellent in workability. Further, the back surface 22A of the substrate 22 is detachably fixed together with the light guide plate 11 and the light guide plate 12 to one surface 23A of the case 23 of the case unit 200 described later via a holding member 31 of the holding unit 300 described later. ing. In addition, it is good also as a structure which hold | maintains the board | substrate 22 so that attachment or detachment is independently possible with respect to the one surface 23A of the housing | casing 23 using the separate fixing member which consists of screws, for example.

  Similarly, with respect to the housing unit 200, the power supply unit supplies predetermined drive power to the light source unit. Such a power supply unit includes a housing 23 for storing the power supply unit 24 and the power supply unit 24. Hereinafter, the configuration of the power supply unit will be described. The casing 23 of the power supply unit is made of, for example, aluminum and is formed in a cylindrical shape having a step. The back surface 22A of the substrate 22 is engaged with the one surface 23A of the casing 23. Further, the engaging hole 23C formed in the other surface 23B of the housing 23 is detachably fitted into the electric circuit portion T which is a power supply line of AC voltage 100V provided in the indoor equipment, so that it can be attached to the power supply unit 24. Power is supplied. Further, the outer peripheral surface 23D of the housing 23 is formed of a concavo-convex shape or the like that increases the surface area of the housing 23 to efficiently dissipate heat generated when, for example, converting a 100 V AC voltage to a 24 V DC voltage. Fins may be formed. In addition, the power supply unit 24 of the power supply unit steps down the power supplied from the outside to 100 V, for example, 24 V, rectifies to a constant DC current, pulse modulation after rectification, and noise in accordance with the rating of the light source 21. It is for performing removal or the like. Such a power supply unit 24 includes, for example, a transformer, a rectifier, and a capacitor. Regarding the configuration of the power supply unit 24, for example, when a fluorescent tube, a cold cathode tube, or a neon tube is used as the light source of the light source unit, AC power supplied from the outside can be used without converting it to DC. .

  Similarly, with respect to the housing unit 200, a housing unit 230 which is a modification of the housing unit 200 is different from the housing unit 200 illustrated in FIG. 6A, for example, indoors as illustrated in FIG. 6B. A base 23 </ b> H that is screwed into a socket installed in the facility and receives power supply is provided. The base 23H is not limited to the shape of the base, and may be, for example, a plug that is inserted into an outlet and receives power supply, or a terminal that receives power supply by connecting a generator or a storage battery. The diameter of the base 23H is, for example, a general size of 26 mm in diameter. Note that the configuration of the base 23H of the housing 230 can also be applied to the housings of the illumination devices of other embodiments.

  As shown in FIG. 3, for example, the holding unit 300 constituting the lighting device 1 of the first embodiment engages with the light guide plate 11 and the light guide plate 12 of the light guide unit 100, and at least the light guide plate 11 and the light guide plate 12. Is detachably held in the housing 23. Such a holding unit 300 includes a holding member 31 and a fixing member 32. Hereinafter, the configuration of the holding unit 300 will be described. The holding member 31 of the holding unit 300 includes a pair of holding members 31 each having a semi-disc shape. Specifically, each of the pair of holding members 31 is engaged by inserting a groove portion 31 </ b> A opened in the center of the holding member 31 into an engaging portion 12 </ b> H provided in the branch portion 12 </ b> A of the light guide plate 12. Yes. Further, the pair of holding members 31 has protrusions 31B formed at both ends of the holding member 31, respectively, on the concave engaging portions 11H provided at the lower portions of the branching portion 11A and the branching portion 11D of the light guide plate 11, respectively. Inserted and engaged.

  2 and 5A, the light guide plate 12 is inserted into the light guide plate 11 and the pair of holding members 31 are engaged with each other, for example, from a screw. The fixing member 32 is passed through the pair of holding members 31 in the order of the holes 31 </ b> D and the screw holes 22 </ b> B opened in the substrate 22. Then, the light guide plate 11, the light guide plate 12, and the substrate 22 are attached to the housing 23 by screwing the fixing member 32 into a plurality of screw holes 23 </ b> E provided on one surface 23 </ b> A of the housing 23 of the housing portion 200. Removably hold each. The inner peripheral surfaces of the pair of holding members 31 cover the engaging grooves 23F provided on the outer peripheral surface 23D of the housing 23, respectively. 2 and 5B, the light guide plate 12 is provided on the inner peripheral surface of the housing 23 with the light guide plate 12 inserted into the light guide plate 11 and the pair of holding members 31 engaged. Even if the light guide plate 11 and the light guide plate 12 are detachably held with respect to the housing 23 by screwing the screw threads 31F respectively formed on the outer peripheral surfaces of the pair of holding members 31 into the formed screw grooves 23I. good. In this case, the board | substrate 22 is directly hold | maintained in the screw hole 23E provided in two or more by one surface 23A of the housing | casing 23 using the fixing member which consists of screws, for example.

  As mentioned above, according to the illuminating device 1 which concerns on 1st Embodiment, the light guide equivalent to the light emission part from which the light distribution characteristic and design property of light, such as a spot type and a light bulb type, differ according to the environment of a plant | facility, and a user's liking. The part 100 can be easily detached and replaced using the holding part 300. Therefore, if the illuminating device 1 is used, it is not necessary to prepare a plurality of illuminating devices according to different specifications, and cost and storage space can be reduced. Moreover, according to the illuminating device 1 which concerns on 1st Embodiment, the some light-guide plate combined three-dimensionally in the cross shape in the light guide part 100 is provided. Therefore, the diffused light derived from the light guide plate provided in the illumination device 1 is emitted without being shielded by the adjacent light guide plate. Similarly, according to the illuminating device 1 which concerns on 1st Embodiment, it is possible to form the front-end | tip of a light-guide plate in a special shape. Therefore, the difference in light intensity distribution can be suppressed regardless of the angle irradiated by the illumination device 1. Similarly, according to the illuminating device 1 which concerns on 1st Embodiment, since the surface area of the side surface which reflects light regularly inside a light guide plate increases by branching a light guide plate into plurality, between these side surfaces. Light is likely to undergo multiple reflections. Therefore, in the illuminating device 1, the ratio of the light emitted from the tip of the light guide plate is decreased, and the ratio of the light converted into the diffused light in the concave or convex pattern is increased, thereby improving the light extraction efficiency. Can be improved.

[Second Embodiment]
Hereinafter, the illumination device 2 according to the second embodiment of the present invention will be specifically described with reference to FIGS. 25 to 29.

  Note that the lighting device 2 according to the second embodiment of the present invention is provided with a housing portion 210 in which a heat radiating portion and a reflecting portion are added to the housing portion 200 constituting the lighting device 1 according to the first embodiment. It has the feature in being. Other configurations according to the second embodiment are the same as the configurations described in the first embodiment. Specifically, the lighting device 2 of the second embodiment includes, for example, a light guide unit 100 and a holding unit 300 having the same specifications as the lighting device 1 of the first embodiment, as shown in FIG. It is comprised from the housing | casing part 210 peculiar to the illuminating device 2 of 2 embodiment. Therefore, in the second embodiment, a description will be mainly given of the casing unit 210 having a configuration different from that of the first embodiment.

  The housing | casing part 210 which comprises the illuminating device 2 of 2nd Embodiment adjoins the light guide part 100, for example, as shown in FIG. 27, and has provided the light source part, the power supply part, the thermal radiation part, and the reflection part. . Note that the casing 23 of the casing unit 210 has the same specifications as the casing 23 of the casing unit 200 that constitutes the lighting device 1 of the first embodiment. A joint surface 23G made of a screw thread for joining at the outer peripheral surface 23D is formed. Further, the light source unit and the power supply unit provided in the housing unit 210 are the same as those provided in the housing unit 200. Therefore, hereinafter, the heat radiating part and the reflecting part provided in the housing part 210 will be described in order. The heat radiating unit provided in the casing unit 210 radiates heat generated by the light source 21 of the light source unit. Such a heat radiating portion is formed in a cylindrical shape by combining the upper plate member 25, the outer frame member 26, the outer can member 27, and the edge member 28. Hereinafter, the configuration of the heat dissipation unit will be described. The upper plate member 25 of the heat radiating portion is made of, for example, aluminum and is formed in a disk shape. A through hole is provided in the center of the upper plate member 25, and a thread groove for engaging the joint surface 23G of the housing 23 is formed on the inner peripheral surface 25C of the through hole. Note that, for example, uneven fins may be formed on the upper surface 25B of the upper plate member 25 in order to efficiently dissipate heat generated by the light source 21 by increasing the surface area.

  In addition, regarding the casing unit 210, the outer frame member 26 of the heat radiating unit is made of, for example, aluminum and is formed in a cylindrical shape. The upper portion 26A of the outer frame member 26 is, for example, bonded and fixed to the outer periphery of the lower surface 25A of the upper plate member 25. The outer can material 27 of the heat radiating portion is made of, for example, aluminum and is formed in a truncated cone shape. The upper portion 27A of the outer can material 27 is screwed to the lower surface 25A of the upper plate member 25, for example, and the lower portion 27B of the outer can material 27 is in contact with the inner peripheral surface of the outer frame material 26. Further, the edge member 28 of the heat radiating portion is made of, for example, aluminum and is formed in a substantially ring shape. Note that a lower portion 26B of the outer frame member 26, a lower portion 27B of the outer can member 27, and a lower portion 29B of a reflecting member 29 described later are inserted into the recess 28A of the edge member 28, for example, and fixed by bonding.

  Similarly, with respect to the casing unit 210, the reflection unit provided in the casing unit 210 reflects light derived from the light guide plate 11 and the light guide plate 12 in a predetermined direction. Such a reflection part is composed of a reflection member 29. Hereinafter, the reflecting member 29 will be described. The reflecting member 29 is made of, for example, aluminum and is formed in a truncated cone shape having a paraboloid, an aspherical surface, or an elliptical surface. In addition, the upper portion 29A of the reflecting member 29 is bonded and fixed to the upper portion 27A of the outer can material 27, for example, and the lower portion 29B of the reflecting member 29 abuts on the inner peripheral surface of the outer can material 27, and the concave portion 28A of the edge member 28 For example, it is bonded and fixed in the inserted state. Note that a metal film having a sufficient reflectance in the visible light region may be deposited on the reflecting member 29. Here, a part of the diffused light derived from the light guide plate 11 and the light guide plate 12 is irradiated to the reflecting member 29, and most of the irradiated light is derived to the outside of the illumination device 2.

  28, each light guide plate of the light guide unit 120 ′ illustrated in FIG. 28 is different from the light guide plate 121 and the light guide plate 122 of the light guide unit 120 illustrated in FIG. Corresponds to the extended length. Similarly, each light guide plate of the light guide unit 130 ′ shown in FIG. 29 has the light guide plate 131 and the light guide plate 132 of the light guide unit 130 shown in FIG. 21 matched with the length of the reflection member 29 of the housing unit 210. It corresponds to the extended one.

  As mentioned above, according to the illuminating device 2 which concerns on 2nd Embodiment, the light distribution characteristic and design property, such as a spot type and a light bulb type, differ according to the environment of a facility and a user's liking similarly to the illuminating device 1. The light guide unit 100 corresponding to the light emitting part can be easily detached and replaced using the holding unit 300. Therefore, if the illuminating device 2 is used, it is not necessary to prepare a plurality of illuminating devices according to different specifications, and costs and storage space can be reduced. Moreover, according to the illuminating device 2 which concerns on 2nd Embodiment, the illuminating device 1 is provided with the some light-guide plate combined in the cross shape in the light guide part 100 similarly to the illuminating device 1. FIG. Therefore, the diffused light derived from the light guide plate provided in the illumination device 2 is emitted without being shielded by the adjacent light guide plate. Similarly, according to the illuminating device 2 which concerns on 2nd Embodiment, similarly to the illuminating device 1, it is possible to form the front-end | tip of a light-guide plate in a special shape. Therefore, the difference in light intensity distribution can be suppressed regardless of the angle irradiated by the illumination device 2. Similarly, according to the illuminating device 2 which concerns on 2nd Embodiment, the surface area of the side surface which makes regular reflection of light inside a light guide plate increases like the illuminating device 1 by branching a light guide plate into plurality. For this reason, light is likely to be multiple-reflected between the side surfaces. Therefore, in the illuminating device 2, the ratio of the light emitted from the tip of the light guide plate decreases, and the ratio of the light converted into diffused light by the concave or convex pattern increases, thereby improving the light extraction efficiency. Can be improved.

  Furthermore, according to the illuminating device 2 according to the second embodiment, the housing portion 210 that includes the heat radiating portion and the reflecting portion corresponding to the output of up to about 10 W is disposed on the housing portion 200 constituting the illuminating device 1. doing. Therefore, in the illuminating device 2, heat radiation corresponding to the medium output can be performed by the heat radiating unit, and a part of the light derived from the light guide plate is reflected by the reflecting unit in a predetermined direction to optimize the light intensity distribution. Is possible.

[Third Embodiment]
Hereinafter, the illumination device 3 according to the third embodiment of the present invention will be specifically described with reference to FIGS. 30 to 33.

  Note that the illumination device 3 according to the third embodiment of the present invention is different from the light guide 100 in which a plurality of light guide plates according to the first and second embodiments are combined in a cross shape, and the light guide plates are arranged in parallel. A plurality of light guides 160 are characterized. Such a lighting device 3 of the third embodiment corresponds to a light guide unit 160 provided with a plurality of light guide plates in parallel and a light guide plate arranged in parallel with each other, as shown in FIGS. 30 and 31, for example. It is comprised from the housing | casing part 220 which has light source arrangement | positioning, and the holding | maintenance part 310 which hold | maintains several light guide plates separately. Hereinafter, in the third embodiment, a configuration different from the first and second embodiments will be described in the order of the light guide unit 160, the holding unit 310, and the housing unit 220.

  For example, as illustrated in FIGS. 30 and 31, the light guide unit 160 included in the illumination device 3 of the third embodiment diffuses light incident from the incident surface from a concave or convex pattern formed on the main surface. A plurality of light guide plates led out as light are provided in parallel. Such a light guide unit 160 is configured, for example, by attaching a joining member 164 to the light guide plate 161, the light guide plate 162, and the light guide plate 163. Here, the light guide plate 161 is made of, for example, an acrylic resin plate or a methacrylic resin plate, and the tip is branched into five. Further, the light guide plate 161 is formed so that the length of the portion branched into five becomes shorter, for example, from the center toward both ends. Similarly to the light guide plate 11 and the light guide plate 12 of the light guide unit 100, the light guide plate 161 has a concave pattern for deriving diffused light, a convex pattern, or a pattern composed of concave and convex patterns. It is formed in a shape. The light from the light source 21 is incident on the inside of the light guide plate 161 from the incident surface 161 </ b> F of the light guide plate 161. Further, at one end of the light guide plate 161, an engaging portion 161A composed of a convex portion for engaging with a holding portion 310 to be described later is formed. Similarly, the other end of the light guide plate 161 is formed with an engaging portion 161 </ b> B including a convex portion for engaging with the joining member 164. Here, the joining member 164 is made of, for example, a resin plate having a certain curvature, and is formed in a plate shape having a space inside. Note that the engaging portion 161 </ b> B of the light guide plate 161 is inserted into a space provided inside the joining member 164.

  Further, with respect to the light guide unit 160, the light guide plate 162 has, for example, four branches at the tip. In addition, the light guide plate 162 is formed such that the lengths of the four branched portions are shorter at, for example, the two ends at the two ends than the two at the center. In addition, the length of each branched portion of the light guide plate 162 is generally shorter than the length of each branched portion of the light guide plate 161. Other specifications of the light guide plate 162 are the same as the specifications of the light guide plate 161. The light guide plate 163 has, for example, a front end branched into three. In addition, the light guide plate 163 is formed so that the length of the portion branched into three is, for example, two shorter at both ends than one at the center. In addition, the length of each branched portion of the light guide plate 163 is generally shorter than the length of each branched portion of the light guide plate 162. Other specifications of the light guide plate 163 are the same as the specifications of the light guide plate 161. Here, the light guide unit 160 includes, for example, five light guide plates arranged in parallel in the order of the light guide plate 163, the light guide plate 162, the light guide plate 161, the light guide plate 162, and the light guide plate 163. The light guide plate 161 to the light guide plate 163 are coated with a glass coating agent (not shown) having functions such as waterproof, antifouling, and dustproof, similar to the light guide plate 11 and the light guide plate 12 of the light guide unit 100. Alternatively, a transparent resin (not shown) having functions such as waterproof, antifouling, and dustproof may be coated.

  For example, as illustrated in FIG. 31A, the holding unit 310 that configures the lighting device of the third embodiment can be attached and detached by temporarily bending the bonding member 164 to each light guide plate of the light guide unit 160. Hold on. In addition, the holding unit 310 is fixed to the housing unit 220. Such a holding unit 310 includes a holding member 311 and a holding member 312. Hereinafter, the configuration of the holding unit 310 will be described. The holding member 311 of the holding unit 310 is made of plastic, for example, and is formed in a plate shape. Note that an engaging portion 311A formed of a recess is formed on the side surface of the holding member 311 and engages a joining member 164 mounted on the engaging portion 161B of the light guide plate 161, for example. Here, the adjacent light guide plate may be accurately positioned by forming a protrusion on the engaging portion 311A, for example, in accordance with the width of the joining member 164. Further, the upper surface portion 311B of the holding member 311 is fixed to the upper portion 27A of the outer can material 27 constituting the housing portion 220 by screwing or an adhesive. The holding member 312 is made of, for example, plastics and is formed in a plate shape, like the holding member 311. Note that an engaging portion 312 </ b> A including a concave portion is formed on the side surface of the holding member 312, and for example, the engaging portion 161 </ b> A of the light guide plate 161 is engaged. Here, a protrusion may be formed on the engaging portion 312A according to the width of the engaging portion 161A of the light guide plate 161, for example, so that the adjacent light guide plates can be positioned accurately. Further, the upper surface portion 312B of the holding member 312 is fixed to the upper portion 27A of the outer can material 27 with screws or an adhesive.

  Regarding the holding unit 310, the holding unit 320 illustrated in FIG. 32A corresponds to an application example of the holding unit 310. Such a holding unit 320 detachably holds each light guide plate of the light guide unit 160 by, for example, operating the operation unit 323C of the bonding member 323 left and right and temporarily moving the bonding member 323 left and right. . Such a holding unit 320 includes a holding member 321, a holding member 322, and a joining member 323. Hereinafter, the configuration of the holding unit 320 will be described. The holding member 321 of the holding part 320 is made of plastics, for example, and is formed in a plate shape. Note that a plurality of holes are formed in the side surface of the holding member 321 and each accommodates a part of the urging portion 323A of the joining member 323 described later. In addition, the upper surface portion 321 </ b> B of the holding member 321 is fixed to the upper portion 27 </ b> A of the outer can material 27 constituting the housing portion 220. The holding member 322 has the same specifications as the holding member 312 of the holding unit 310. Further, the plurality of joining members 323 provided in the holding portion 320 are each made of plastics, for example, and are formed in a rectangular shape. The urging portion 323A of the joining member 323 includes, for example, a spring and an axial core, and one end of the spring is inserted and fixed in a hole 321C formed in the side surface of the holding member 321. Further, the upper surface portion 323 </ b> B of the joining member 323 is in contact with the upper portion 27 </ b> A of the outer can material 27 constituting the housing portion 220. Further, the operation portion 323C of the joining member 323 is molded from a rod shape integrally with the main body. Note that an engaging portion 323D formed of a concave portion is formed on the side surface of the joining member 323, and for example, the engaging portion 161B of the light guide plate 161 is engaged.

  As shown in FIG. 33, for example, the housing unit 220 constituting the illumination device of the third embodiment has the light sources 21 arranged in a matrix with respect to the substrate 22. For example, six light sources 21 are arranged in the first and seventh rows, eight in the second and sixth rows, and ten in the third to fifth rows. For example, the light guide plates 163, the light guide plate 162, the light guide plate 161, the light guide plate 162, and the light guide plate 163 are arranged in this order so as to correspond to the light sources 21 arranged in the matrix form. Yes. The substrate 22 is screwed to the one surface 23A of the housing 23 using, for example, screw holes 22G.

  As described above, according to the lighting device 3 according to the third embodiment, similarly to the lighting device 1 and the lighting device 2, light distribution characteristics such as a spot type and a bulb type according to the environment of the facility and the user's preference, The light guide unit 160 corresponding to the light emitting part having different design properties can be easily detached and replaced using the holding unit 310, for example. Therefore, if the illuminating device 3 is used, it is not necessary to prepare a plurality of illuminating devices according to different specifications, and costs and storage space can be reduced. Moreover, according to the illuminating device 3 which concerns on 3rd Embodiment, similarly to the illuminating device 1 and the illuminating device 2, multiple light guide plates are provided in the light guide part 160, and also the front-end | tip of a light guide plate is made into a special shape. It is possible to form. Therefore, the difference in light intensity distribution can be suppressed regardless of the angle irradiated by the illumination device 3. Similarly, according to the illuminating device 3 according to the third embodiment, similarly to the illuminating device 1 and the illuminating device 2, the side surface that regularly reflects light inside the light guide plate by branching the light guide plate into a plurality of portions. Since the surface area is increased, the light is easily multi-reflected between the side surfaces. Therefore, in the illuminating device 3, the ratio of the light emitted from the tip of the light guide plate is reduced, and the ratio of the light converted into the diffused light in the concave or convex pattern is increased, thereby improving the light extraction efficiency. Can be improved.

  Furthermore, according to the illuminating device 3 according to the third embodiment, the housing unit 220 including the radiating unit and the reflecting unit corresponding to the output up to about 20 W is disposed on the housing unit 200 constituting the illuminating device 1. doing. Therefore, in the illuminating device 3, heat radiation corresponding to high output is possible by the heat radiating unit, and a part of the light led out from the light guide plate is reflected by the reflecting unit in a predetermined direction to optimize the light intensity distribution. Is possible.

[Fourth Embodiment]
Hereinafter, the illuminating device 4 of the 4th Embodiment of this invention is demonstrated concretely, referring FIG.

  In addition, the illuminating device 4 of the 4th Embodiment of this invention is characterized by the light guide part 170 which provided the lens at the front-end | tip of each light-guide plate of the light guide part 100 which comprises the illuminating device 1 of 1st Embodiment. Have. In addition, the configuration according to the fourth embodiment is the same as the configuration described in the first embodiment. Specifically, as shown in FIG. 34, for example, the illumination device 4 of the fourth embodiment includes a housing unit 200 and a holding unit 300 having the same specifications as those of the illumination device 1 of the first embodiment, The light guide unit 170 is unique to the illumination device 4 of the fourth embodiment. Therefore, in the fourth embodiment, the light guide unit 170 having a configuration different from that of the first embodiment will be mainly described.

  As shown in FIG. 34, the light guide unit 170 constituting the illumination device 4 of the fourth embodiment derives light incident from the incident surface as diffused light from a concave or convex pattern formed on the main surface. In addition, a light guide plate 171 and a light guide plate 172 which are refracted from a lens formed at the tip and led out are provided to intersect. Here, the light guide plate 171 has the light guide plate 171 with its distal end branched into four parts: a branch part 171A, a branch part 171B, a branch part 171C, and a branch part 171D. The light guide plate 171 is formed such that the lengths of the leading ends 171G of the branching portions 171B and 171C are longer than the lengths of the leading ends 171G ′ of the branching portions 171A and 171D. A convex lens 170L is formed at the tip 171G and tip 171G ′ of the light guide plate 171. Similarly, the light guide plate 172 inserted and combined in the light guide plate 171 is branched into four, that is, a branch portion 172A, a branch portion 172B, a branch portion 172C, and a branch portion 172D, like the light guide plate 171. As with the light guide plate 171, the light guide plate 172 is formed such that the lengths of the leading ends 172G of the branching portions 172B and 172C are longer than the lengths of the leading ends 172G ′ of the branching portions 172A and the branching portions 172D. Has been. Similarly to the light guide plate 171, convex lenses 170L are formed at the tip 172G and the tip 172G ′ of the light guide plate 172.

  In addition, regarding the light guide unit 170, the lens 170L may be formed at all the tips of the light guide plate 171 and the light guide plate 172, or may be formed only at a part of each tip. The lens 170L is, for example, a Fresnel lens, an aspherical lens, or a spherical lens in accordance with the optical characteristics required for the illumination device 4. In this case, the light derived from the lens 170L is, for example, substantially parallel light or substantially condensed light. Similarly, the lens 170L may be a concave aspherical lens or a spherical lens. In this case, the light derived from the lens 170L is, for example, substantially diverging light. Here, the lens 170L described above is molded integrally with the light guide plate 171 and the light guide plate 172. The lens 170L may be formed by cutting each end of the light guide plate 171 and the light guide plate 172. Similarly, the lens 170L may be heated and pressure-bonded to the tips of the light guide plate 171 and the light guide plate 172, or may be bonded using an adhesive.

  As described above, according to the illuminating device 4 according to the fourth embodiment, similarly to the illuminating devices 1 to 3, the light distribution characteristics of the light such as the spot type and the bulb type according to the environment of the facility and the user's preference. The light guide unit 170 corresponding to the light emitting part having different design properties can be easily detached and replaced using the holding unit 300, for example. Therefore, if the illuminating device 4 is used, it is not necessary to prepare a plurality of illuminating devices according to different specifications, and costs and storage space can be reduced. Moreover, according to the illuminating device 4 which concerns on 4th Embodiment, similarly to the illuminating device 1 and the illuminating device 2, the light guide part 170 is provided with the some light-guide plate combined three-dimensionally in the cross shape. Therefore, the diffused light derived from the light guide plate provided in the illumination device 4 is emitted without being shielded by the adjacent light guide plate. Similarly, according to the illuminating device 4 which concerns on 4th Embodiment, like the illuminating device 1 thru | or the illuminating device 3, the light guide plate is branched into several, and the side surface which carries out regular reflection of the light inside a light guide plate is demonstrated. Since the surface area increases, the light is likely to be multiply reflected between the side surfaces. Therefore, in the illuminating device 4, the ratio of light emitted from the tip of the light guide plate decreases, and the ratio of light converted into diffused light in a concave or convex pattern increases, so that the light extraction efficiency is improved. Can be improved.

  Furthermore, according to the illuminating device 4 which concerns on 4th Embodiment, the light guide part 170 which provided the lens 170L in the front-end | tip of each light guide plate of the light guide part 100 is arrange | positioned. Therefore, in the illuminating device 4, the light derived from the tip of each light guide plate of the light guide unit 170 is converted into, for example, substantially parallel light or substantially condensed light via the lens 170 </ b> L, so that the light distribution characteristic of the light is improved. Can be optimized.

[Fifth Embodiment]
Hereinafter, the illumination device 5 according to the fifth embodiment of the present invention will be specifically described with reference to FIGS. 35 to 37.

  Note that the illumination device 5 according to the fifth embodiment of the present invention is different from the respective holding portions according to the first to fourth embodiments in that the holding device is provided with one or more lenses so as to be positioned between adjacent light guide plates. The part 330 has a feature. In the illumination device 5 of the fifth embodiment as described above, for example, as shown in FIG. 35, the holding unit 330 provided with one or more lenses so as to be positioned between the light guide unit 100 described above and the adjacent light guide plate. And a housing part 240 having a light source arrangement corresponding to a plurality of light guide plates arranged in the light guide part 100 and a plurality of lenses arranged in the holding part 330. Hereinafter, in the fifth embodiment, a configuration different from the first to fourth embodiments will be described in the order of the holding unit 330 and the housing unit 240.

  As shown in FIG. 36, the holding unit 330 constituting the lighting device 5 of the fifth embodiment is placed on the surface of the pair of holding members 31 so as to be positioned between the adjacent light guide plate 11 and the light guide plate 12. For example, one lens 33 is provided. The lens 33 is, for example, a Fresnel lens, an aspherical lens, or a spherical lens in accordance with the optical characteristics required for the lighting device 5. In this case, the light derived from the lens 33 is, for example, substantially parallel light or substantially condensed light. Similarly, the lens 33 may be a concave aspherical lens or a spherical lens. In this case, the light derived from the lens 33 is, for example, substantially diverging light. The holding unit 330 uses, for example, a transparent polycarbonate in the visible range, and integrally molds the pair of holding members 31 and the lens 33. The lens 33 may be molded by cutting each surface of the pair of holding members 31. Similarly, the lens 33 may be heat-bonded to each surface of the pair of holding members 31 or may be bonded using an adhesive. Further, the number of lenses is not particularly limited. For example, like the holding portion 340 shown in FIG. 36, the pair of holding members 31 is positioned between the adjacent light guide plate 11 and the light guide plate 12. For example, three lenses 34 may be provided on the surface. The holes 31E shown in FIGS. 36B and 37B correspond to the holes 31D shown in FIG.

  For example, as shown in FIG. 36B, the housing portions 240 constituting the illumination device 5 of the fifth embodiment are arranged one by one so as to be positioned between the adjacent light guide plate 11 and the light guide plate 12. With the lens 33 provided, the light from the four light sources 21 is led out from the illumination device 5 as, for example, substantially parallel light. Also, for example, as shown in FIG. 37 (b), light from four light sources 21 is emitted by three lenses 34 arranged so as to be positioned between the adjacent light guide plate 11 and the light guide plate 12. For example, it is derived from the illumination device 5 as substantially parallel light. The lenses having the same size may be provided more densely, or by providing a plurality of lenses smaller than the main lens around the main lens, the light from the light source 21 can be more efficiently transmitted from the illumination device 5. It is good also as a structure made to derive.

  As mentioned above, according to the illuminating device 5 which concerns on 5th Embodiment, like the illuminating devices 1 thru | or the illuminating device 4, according to the environment of a plant | facility, and a user's liking, light distribution characteristics, such as a spot type and a light bulb type, The light guide unit 100 corresponding to the light emitting part having a different design can be easily attached and detached using, for example, the holding unit 330 and replaced. Therefore, if the illuminating device 5 is used, it is not necessary to prepare a plurality of illuminating devices according to different specifications, and costs and storage space can be reduced. Moreover, according to the illuminating device 5 which concerns on 5th Embodiment, similarly to the illuminating device 1, the illuminating device 2, and the illuminating device 4, the some light guide plate which combined the light guide part 100 three-dimensionally in the cross shape is made. Provided. Therefore, the diffused light derived from the light guide plate provided in the illumination device 5 is emitted without being shielded by the adjacent light guide plate. Similarly, according to the illuminating device 5 which concerns on 5th Embodiment, it is possible to form the front-end | tip of a light-guide plate in a special shape similarly to the illuminating devices 1 thru | or the illuminating device 4. FIG. Therefore, the difference in light intensity distribution can be suppressed regardless of the angle irradiated by the illumination device 5. Similarly, according to the illuminating device 5 which concerns on 5th Embodiment, like the illuminating device 1 thru | or the illuminating device 4, the light guide plate is branched into several, and the side surface which carries out regular reflection of the light inside a light guide plate is carried out. Since the surface area is increased, the light is easily multi-reflected between the side surfaces. Therefore, in the illuminating device 5, the ratio of light emitted from the tip of the light guide plate decreases, and the ratio of light converted into diffused light in a concave or convex pattern increases, so that the light extraction efficiency is improved. Can be improved.

  Furthermore, according to the illuminating device 5 which concerns on 5th Embodiment, the holding | maintenance part 330 which provided one lens 33 so that it may be located between adjacent light-guide plates is arrange | positioned. Therefore, in the illuminating device 5, the amount of light derived from the illuminating device 5 can be increased as compared with the case of only the light guide unit 100, and for example, the light derived from the lens 33 of the holding unit 330 is substantially parallel. The light distribution characteristic of light can be optimized by using light, substantially condensed light, or substantially diverging light.

[Sixth Embodiment]
Hereinafter, the illuminating device 6 of the 6th Embodiment of this invention is demonstrated, referring FIG.

  The lighting device 6 according to the sixth embodiment of the present invention includes the light guide unit 170 described in the fourth embodiment, the casing unit 210 described in the second embodiment, and the first embodiment. The holding unit 300 is described. For this reason, in the sixth embodiment, description of each configuration of the lighting device 6 is omitted.

  As described above, according to the illuminating device 6 according to the sixth embodiment, similarly to the illuminating devices 1 to 5, the light distribution characteristics such as the spot type and the light bulb type according to the environment of the facility and the user's preference. The light guide part 170 corresponding to the light emitting part having a different design can be easily detached and replaced using the holding part 300. Therefore, if the illuminating device 6 is used, it is not necessary to prepare a plurality of illuminating devices according to different specifications, and costs and storage space can be reduced. Moreover, according to the illuminating device 6 which concerns on 6th Embodiment, similarly to the illuminating device 1, the illuminating device 2, the illuminating device 4, and the illuminating device 5, it is the plurality combined by the light guide part 170 in the cross shape three-dimensionally. The light guide plate is provided. Therefore, the diffused light derived from the light guide plate provided in the illumination device 6 is emitted without being shielded by the adjacent light guide plate. Similarly, according to the illuminating device 6 which concerns on 6th Embodiment, like the illuminating devices 1 thru | or the illuminating device 5, the side surface which makes regular reflection of light inside a light guide plate by branching a light guide plate into a plurality is divided. Since the surface area is increased, the light is easily multi-reflected between the side surfaces. Therefore, in the illuminating device 6, the ratio of the light emitted from the tip of the light guide plate is decreased, and the ratio of the light converted into the diffused light in the concave or convex pattern is increased, thereby improving the light extraction efficiency. Can be improved.

  Furthermore, according to the illuminating device 6 according to the sixth embodiment, similarly to the illuminating device 4, the light guide unit 170 provided with a lens 170 </ b> L is disposed at the tip of each light guide plate of the light guide unit 100. Therefore, in the illuminating device 6, the light derived from the front end of each light guide plate of the light guide unit 170 is converted into, for example, substantially parallel light or substantially condensed light through the lens 170 </ b> L, so that the light distribution characteristic of the light is improved. Can be optimized. Moreover, according to the illuminating device 6 which concerns on 6th Embodiment, the housing | casing part 210 which added the thermal radiation part and the reflection part similarly to the illuminating device 2 is arrange | positioned. Therefore, in the illuminating device 6, heat radiation corresponding to the medium output can be performed by the heat radiating unit, and a part of the light derived from the light guide plate is reflected by the reflecting unit in a predetermined direction to optimize the light intensity distribution. Is possible.

[Seventh Embodiment]
Hereinafter, the illuminating device 7 of the 7th Embodiment of this invention is demonstrated, referring FIG.

  Note that the illumination device 7 according to the seventh embodiment of the present invention includes only the arrangement of the light source 21 in the light guide unit 100 described in the first embodiment and the housing unit 210 described in the second embodiment. The housing unit 250 based on the specification of the housing unit 240 of the embodiment and the holding unit 330 described in the fifth embodiment. For this reason, in the seventh embodiment, the description relating to each configuration of the illumination device 7 is omitted.

  As described above, according to the illuminating device 7 according to the seventh embodiment, similarly to the illuminating devices 1 to 6, the light distribution characteristics such as the spot type and the bulb type according to the environment of the facility and the user's preference, The light guide unit 100 corresponding to the light emitting part having a different design can be easily detached and replaced using the holding unit 330. Therefore, if the illuminating device 7 is used, it is not necessary to prepare a plurality of illuminating devices according to different specifications, and the cost and storage space can be reduced. Moreover, according to the illuminating device 7 which concerns on 7th Embodiment, like the illuminating device 1, the illuminating device 2, the illuminating device 4, the illuminating device 5, and the illuminating device 6, it is three-dimensionally cross-shaped to the light guide part 100. FIG. A plurality of light guide plates combined with each other is provided. Therefore, the diffused light derived from the light guide plate provided in the illumination device 7 is emitted without being blocked by the adjacent light guide plate. Similarly, according to the illuminating device 7 which concerns on 7th Embodiment, it is possible to form the front-end | tip of a light-guide plate in a special shape similarly to the illuminating devices 1 thru | or the illuminating device 6. FIG. Therefore, the difference in light intensity distribution can be suppressed regardless of the angle irradiated by the illumination device 7. Similarly, according to the illuminating device 7 according to the seventh embodiment, as in the illuminating devices 1 to 6, the side surface that regularly reflects light inside the light guide plate by branching the light guide plate into a plurality of portions. Since the surface area is increased, the light is easily multi-reflected between the side surfaces. Therefore, in the illuminating device 7, the ratio of light emitted from the front end of the light guide plate is reduced, and the ratio of light converted into diffused light in a concave or convex pattern is increased, thereby improving the light extraction efficiency. Can be improved.

  Furthermore, according to the illuminating device 7 according to the seventh embodiment, similarly to the illuminating device 5, the holding portion 330 provided with one lens 33, for example, is disposed so as to be positioned between adjacent light guide plates. . Therefore, in the illuminating device 7, the amount of light derived from the illuminating device 7 can be increased as compared with the case of only the light guide unit 100, and for example, the light derived from the lens 33 of the holding unit 330 is substantially parallel. The light distribution characteristic of light can be optimized by using light, substantially condensed light, or substantially diverging light. Moreover, according to the illuminating device 7 which concerns on 7th Embodiment, the housing | casing part 250 which added the thermal radiation part and the reflection part is arrange | positioned similarly to the illuminating device 2 grade | etc.,. Therefore, in the lighting device 7, heat radiation corresponding to the medium output can be performed by the heat radiating unit, and a part of the light derived from the light guide plate is reflected by the reflecting unit in a predetermined direction to optimize the light intensity distribution. Is possible.

[Eighth Embodiment]
Hereinafter, the illuminating device 8 of the 8th Embodiment of this invention is demonstrated, referring FIG.

  Note that the illumination device 8 according to the eighth embodiment of the present invention is provided with a lens 180L at the tip of each light guide plate in the light guide unit 160 described in the third embodiment, as in the fourth and sixth embodiments. The light guide unit 180, the housing unit 220 described in the third embodiment, and the holding unit 310 described in the third embodiment. For this reason, in the eighth embodiment, the description relating to each configuration of the illumination device 8 is omitted.

  As described above, according to the illuminating device 8 according to the eighth embodiment, similarly to the illuminating devices 1 to 7, the light distribution characteristics such as the spot type and the bulb type according to the environment of the facility and the user's preference, The light guide portion 180 corresponding to the light emitting portion having a different design can be easily detached and replaced using the holding portion 310. Therefore, if the illuminating device 8 is used, it is not necessary to prepare a plurality of illuminating devices according to different specifications, and costs and storage space can be reduced. Moreover, according to the illuminating device 8 which concerns on 8th Embodiment, similarly to the illuminating device 3, the light guide plate 180 is provided with two or more light guide plates in parallel, and also the front-end | tip of a light guide plate is formed in a special shape. It is possible. Therefore, the difference in light intensity distribution can be suppressed regardless of the angle irradiated by the illumination device 8. Similarly, according to the illuminating device 8 according to the eighth embodiment, similarly to the illuminating devices 1 to 7, the side surface that regularly reflects light inside the light guide plate by branching the light guide plate into a plurality of portions. Since the surface area is increased, the light is easily multi-reflected between the side surfaces. Therefore, in the illuminating device 8, the ratio of light emitted from the front end of the light guide plate is decreased, and the ratio of light converted into diffused light in a concave or convex pattern is increased, thereby improving light extraction efficiency. Can be improved.

  Furthermore, according to the illuminating device 8 according to the eighth embodiment, similarly to the illuminating device 4 and the illuminating device 6, the light guide unit 180 provided with the lens 180L at the tip of each light guide plate is disposed. Therefore, in the illuminating device 8, the light derived from the front end of each light guide plate of the light guide unit 180 is converted into, for example, substantially parallel light or substantially condensed light via the lens 180 </ b> L, so that the light distribution characteristic of the light Can be optimized. Moreover, according to the illuminating device 8 which concerns on 8th Embodiment, the housing | casing part 220 which added the thermal radiation part and the reflection part is arrange | positioned similarly to the illuminating device 2 grade | etc.,. Therefore, in the lighting device 8, heat radiation corresponding to high output is possible by the heat radiating unit, and a part of the light led out from the light guide plate is reflected by the reflecting unit in a predetermined direction to optimize the light intensity distribution. Is possible.

[Ninth Embodiment]
Hereinafter, the illuminating device 9 of the ninth embodiment of the present invention will be specifically described with reference to FIGS. 41 to 44.

  The illumination device 9 according to the ninth embodiment of the present invention is characterized in that the light guide plate of the light guide unit 190 and the lens plate of the lens unit 400 are alternately provided in parallel. As shown in FIG. 41, for example, the illumination device 9 according to the ninth embodiment includes a light guide 190 having a configuration similar to the light guide 160 described in the third embodiment, and a lens plate in parallel. A plurality of lens units 400, a housing unit 260 having basically the same configuration as the housing unit 220 described in the third embodiment, and basically the same as the holding unit 310 described in the third embodiment. It is comprised from the holding | maintenance part 350 of the structure. Hereinafter, in the ninth embodiment, the light guide unit 190, the lens unit 400, the housing unit 260, and the holding unit 350 will be described in this order.

  As shown in FIG. 41, the light guide 190 that configures the illumination device 9 of the ninth embodiment is incident from the incident surface in the same manner as the light guide 160 that configures the illumination device 1 of the third embodiment. A plurality of light guide plates are provided in parallel for deriving light as diffused light from a concave or convex pattern formed on the main surface. As shown in FIG. 42B, such a light guide unit 190 is configured by attaching a joining member 194 to each of the light guide plate 191, the light guide plate 192, and the light guide plate 193. The light guide plate 191, the light guide plate 192, the light guide plate 193, and the bonding member 194 are the light guide plate 161 and the light guide plate of the light guide unit 160 that constitute the lighting device 3 of the third embodiment shown in FIG. 162, the light guide plate 163, and the bonding member 164 are each about half as thin. Further, as shown in FIG. 42B, the light guide unit 190 includes five light guide plates in the order of, for example, a light guide unit 193, a light guide unit 192, a light guide unit 191, a light guide plate 192, and a light guide unit 193. Are provided in parallel. The other specifications related to the light guide unit 190 are the same as the specifications related to the light guide unit 160, and thus the description thereof is omitted.

  As shown in FIG. 42, the lens unit 400 constituting the illuminating device 9 of the ninth embodiment includes a plurality of lens plates arranged in parallel to refract and derive light incident from the incident surface from a lens formed on the main surface. Provided. As shown in FIG. 42B, such a lens unit 400 is configured, for example, by attaching a joining member 403 to a lens plate 401 and a lens plate 402, respectively. Here, the lens plate 401 is made of, for example, an acrylic resin plate or a methacrylic resin plate, and is formed in a plate shape provided with a plurality of lenses. The light from the light source 21 is incident on the inside of the lens plate 401 from, for example, the incident surface 401F of the lens plate 401, and is emitted as, for example, substantially parallel light by the lens 401C provided on the surface facing the incident surface 401F. . The lens 401C of the lens plate 401 is, for example, a Fresnel lens, an aspheric lens, or a spherical lens. Further, at one end of the lens plate 401, an engaging portion 401A composed of a convex portion for engaging with a holding portion 600 described later is formed. Similarly, the other end of the lens plate 401 is formed with an engaging portion 401 </ b> B formed of a convex portion for engaging with the bonding member 403.

  Further, regarding the lens unit 400, the bonding member 403 is formed of a resin plate having a certain curvature, for example, and is formed in a plate shape having a space inside. Note that the engaging portion 401B of the lens plate 401 is inserted into a space provided inside the bonding member 403. Further, for example, a glass coating agent (not shown) having functions such as waterproof, antifouling, and dustproof is applied to the lens plate 401, as with the light guide plate 11 and the light guide plate 12 of the light guide unit 100, or waterproof. A transparent resin (not shown) having functions such as antifouling and dustproof may be coated. The lens plate 402 has the same basic specifications as the lens plate 401, and is different only in the number of formed lenses. 42B, for example, a lens plate 401 is provided in parallel between the light guide 191 and the light guide 192, and the lens plate 402 is provided between the light guide 192 and the light guide 193. Are provided in parallel.

  As shown in FIG. 44, the housing 260 constituting the illumination device 9 of the ninth embodiment has the light sources 21 arranged in a matrix with respect to the substrate 22. Specifically, for example, six light sources 21 are arranged on the substrate 22 in the first and seventh rows, eight in the second and sixth rows, and ten in the third to fifth rows. It is installed. The light guide plate 193, the lens plate 402, the light guide plate 192, the lens plate 401, the light guide plate 191, the lens plate 401, the light guide plate 192, the lens plate 402, so as to correspond to the light sources 21 arranged in a matrix on the substrate 22. The light guide plate and the lens plate are arranged in the order of the light guide plate 193.

As shown in FIG. 42 (a), the holding part 350 constituting the lighting device 9 of the ninth embodiment
Each light guide plate of the light guide unit 190 and each lens plate of the lens unit 400 are detachably held by temporarily bending the bonding member 194 and the bonding member 403, respectively. Such a holding part 350 is attached to, for example, the engaging part 311A of the holding member 311, the width of the joining member 194 attached to the engaging part 191B of the light guide plate 191 and the engaging part 401B of the lens plate 401, for example. The protrusions may be formed in accordance with the width of the joining member 403 so that the adjacent light guide plate and lens plate can be positioned accurately. Similarly, the adjacent light guide plate is formed by forming protrusions on the engaging portion 312A of the holding member 312 according to, for example, the width of the engaging portion 191A of the light guide plate 191 and the width of the engaging portion 401A of the lens plate 401. The lens plate may be positioned accurately. Other specifications related to the holding unit 350 are basically the same as those of the holding unit 310 shown in FIG. A holding unit 360 illustrated in FIG. 43A corresponds to an application example of the holding unit 350. Such a holding unit 360 temporarily moves each of the light guide plates of the light guide unit 190 and each of the lens plates of the lens unit 400, for example, by operating the operation unit 333C of the bonding member 333 to the left and right. To hold it detachable. The other specifications related to the holding unit 360 are basically the same as those of the holding unit 320 shown in FIG.

  As mentioned above, according to the illuminating device 9 which concerns on 9th Embodiment, like the illuminating devices 1 thru | or the illuminating device 8, according to the environment of a plant | facility and a user's liking, light distribution characteristics, such as a spot type and a light bulb type, The light guide 190 corresponding to the light emitting part having a different design can be easily attached / detached and replaced using the holding part 350. Therefore, if the illuminating device 9 is used, it is not necessary to prepare a plurality of illuminating devices according to different specifications, and costs and storage space can be reduced. Moreover, according to the illuminating device 9 which concerns on 9th Embodiment, similarly to the illuminating device 3 and the illuminating device 8, the light guide part 190 is provided with two or more light guide plates in parallel, and also the front-end | tip of a light guide plate is made special. It can be formed into a shape. Therefore, the difference in light intensity distribution can be suppressed regardless of the angle irradiated by the illumination device 9. Similarly, according to the illuminating device 9 according to the ninth embodiment, similarly to the illuminating devices 1 to 8, the side surface that regularly reflects light inside the light guide plate by branching the light guide plate into a plurality of portions. Since the surface area is increased, the light is easily multi-reflected between the side surfaces. Therefore, in the illuminating device 9, the ratio of light emitted from the tip of the light guide plate decreases, and the ratio of light converted into diffused light in a concave or convex pattern increases, thereby improving the light extraction efficiency. Can be improved.

  Furthermore, according to the illumination device 9 according to the ninth embodiment, the light guide plate of the light guide unit 190 and the lens plate of the lens unit 400 are alternately provided in parallel. Therefore, in the lighting device 9, the diffused light is derived from the concave or convex pattern formed on each light guide plate of the light guide unit 190 and refracted from the lens formed on each lens plate of the lens unit 400. Therefore, the light distribution characteristic of light can be optimized. Moreover, according to the illuminating device 9 which concerns on 9th Embodiment, the housing | casing part 260 which added the thermal radiation part and the reflection part is arrange | positioned similarly to the illuminating device 2 grade | etc.,. Therefore, in the illuminating device 9, heat radiation corresponding to high output is possible by the heat radiating section, and a part of the light led out from the light guide plate is reflected by the reflecting section in a predetermined direction to optimize the light intensity distribution. Is possible.

  Finally, a method for manufacturing a light guide plate provided in each of the illumination devices according to the first to ninth embodiments of the present invention will be specifically described.

  For example, ultrasonic processing, heating processing, cutting processing, laser processing, molding processing, and silk printing processing can be used for the method of manufacturing the light guide plate. Hereinafter, each manufacturing method will be described. In ultrasonic processing, a concave pattern is formed on the surface of the light guide plate by partially melting the surface of the light guide plate using ultrasonic vibrations of an ultrasonic processing horn in contact with the surface of the light guide plate. . In the heating process, the surface of the light guide plate is partially melted using the heat of the processing tool brought into contact with the surface of the light guide plate, thereby forming a concave pattern on the surface. Similarly, in the cutting process, a concave pattern is formed on the surface of the light guide plate by partially scraping the surface of the light guide plate using a cutting tool that is rotated or biased while being in contact with the surface of the light guide plate. Similarly, in laser processing, the surface of the light guide plate is partially melted using the heat of the laser light condensed on the surface of the light guide plate, thereby forming a concave pattern on the surface.

  In addition, regarding the manufacturing method of the light guide plate, in the molding process, a shape reflecting the outer shape of the light guide plate to be molded is formed inside the mold, and for example, the mold mounted on the injection molding machine is heated and softened. After the injected resin is injected, the resin is cooled to form a concave pattern, a convex pattern, or a concave and convex pattern on the surface of the light guide plate. Similarly, in silk printing, a plate having predetermined holes is brought into contact with the surface of the light guide plate, and a curable resin is attached to the surface through the holes, and the surface is partially made of resin. By covering, a convex pattern is formed on the surface. Further, for example, a particulate diffusion member that emits diffused light may be added to a resin used for molding or silk printing. Similarly, for example, a resin that is a base material of a light guide plate that performs the above-described ultrasonic processing, heating processing, cutting processing, or laser processing may be added with a particulate diffusion member that emits diffused light. Note that the light guide plate may be formed by a combination of the above-described ultrasonic processing, heating processing, cutting processing, laser processing, molding processing, and silk printing processing. Specifically, for example, after forming only the outer shape of the light guide plate by molding, for example, a concave pattern may be formed on the surface of the light guide plate by ultrasonic processing. Similarly, after forming only the outer shape of the light guide plate by molding, for example, a convex pattern may be formed on the surface of the light guide plate by silk printing, for example.

1, 2, 3, 4, 5, 6, 7, 8, 9 Lighting device 100, 110, 120, 120 ′, 130, 130 ′, 140, 150, 160, 170, 180, 190 , 13, 14A, 14B, 14C, 14D, 14E, 14F, 14G, 14H, 14I, 15, 15 ', 16, 16', 17, 17 ', 18, 19, 111, 112, 121, 122, 131, 132, 141, 142, 151, 152, 161, 162, 163, 171, 172, 191, 192, 193 Light guide plates 11A, 11B, 11C, 11D, 12A, 12B, 12C, 12D, 13A, 13B, 13C, 13D , 121A, 121B, 131A, 131B, 141A, 141B, 151A, 151B, 171A, 171B, 171C, 171D, 172A, 172B, 17 C, 172D Branch portions 11L, 11M, 11N, 12L, 12M, 12N, 13L, 13M, 13N Notches 11F, 12F, 13F, 18F, 19F, 161F Incident surfaces 11G, 11G ′, 12G, 12G ′, 13G, 13G ', 18G, 19G, 121G, 131G, 141G, 151G, 171G, 171G', 172G, 172G 'Tip 11H, 12H Engagement section 12J Joint section 11P, 12P Pattern 13V, 18V, 19V One main surface 13Q, 18Q, 19Q Other main surfaces 13W, 13R, 18W, 18R, 19W, 19R Patterns 141U, 142U, 151U, 152U Side surfaces 161A, 161B Engaging portions 164, 194 Joint members 170L, 180L Lenses 200, 210, 220, 230, 240, 250, 260 Case 21 Light source 22 Substrate 22A Back 22B Screw hole 22G Screw hole 23 Housing 23A One surface 23B Other surface 23C Engagement hole 23D Outer peripheral surface 23E Screw hole 23F Engagement groove 23G Joint surface 23H Base 23I Screw groove 24 Power supply unit 25 Upper plate 25A Lower surface 25B Upper surface 25C Inner peripheral surface 26 Outer frame material 26A Upper part 26B Lower part 27 Outer can material 27A Upper part 27B Lower part 28 Edge material 28A Recess 29 Reflective member 29A Upper part 29B Lower part 300,310,320,330,340,350,360 Holding part 31,31,31 Holding member 31A, 31A Groove 31B, 31B Protrusion 31D, 31D, 31E, 31E Hole 31F Thread 32 Fixing member 33, 34 Lens 311, 312, 321, 322 Holding member 311A, 312A, 322A Engaging portion 311B, 312B, 321B, 322B Upper surface part 321C Hole 323 Joining member 3 23A Energizing portion 323B Upper surface portion 323C Operation portion 323D Engaging portion 400 Lens portion 401, 402 Lens plate 401A, 401B Engaging portion 401C Lens 401F Incident surface 403 Joining member E Eye T Electrical path portion

Claims (11)

A light guide part provided in three dimensions with a light guide plate for deriving light incident from the incident surface as diffused light from a concave or convex pattern formed on the main surface;
A housing part that is adjacent to the light guide part, and that includes a light source part that introduces light into the light incident surface of the light guide plate and a power supply part that supplies predetermined light power to the light source part;
An illuminating apparatus comprising: a holding unit that holds the light guide plate of the light guide unit and includes a lens that is positioned between the adjacent light guide plates and into which light is incident from the light source unit. The holding portion engages with the light guide plate of the light guide portion, and holds the light guide plate detachably on the housing portion.
The lighting device according to claim 1. The casing includes a heat radiating part that radiates heat generated by the light source part and a reflecting part that reflects light derived from the light guide plate in a predetermined direction.
The lighting device according to claim 1. The light guide plates of the light guide section are provided in a crossing manner or in parallel.
The lighting device according to claim 1. In the light guide plate of the light guide section, a tip surface facing the incident surface on which light is incident is branched into at least two or more.
The lighting device according to claim 1. The light guide plate of the light guide part is formed so that the length of the tip branched into at least two or more is equal to or different from the length from the light source part.
The lighting device according to claim 1. The light guide unit is combined with the incident surface of another light guide plate inserted into a portion where the tip of the light guide plate is branched.
The lighting device according to claim 1. The light guide part has a length from the light source part to the tip equal to or different from the other light guide plates.
The lighting device according to claim 1. In the light guide section, the tip of the light guide plate is formed with a curved surface or an inclined surface.
The lighting device according to claim 6. The light guide part is formed with a concave portion formed in a columnar shape or a cone shape with a predetermined depth at the tip of the light guide plate.
The lighting device according to claim 6. In the light guide section, the tip of the light guide plate is formed in a trapezoidal trapezoidal shape or a truncated cone shape.
The lighting device according to claim 6.